Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2018-18928

CVE-2018-18928CRITICAL

n/a n/a — International Components for Unicode (ICU) for C/C++ 63.1 has an integer overflow in number::impl::DecimalQuantity::toScientificString() …

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  U  H  H  H    9.8   .0290   86.8     —

AFFECTED
  Product  Versions  Fixed
  n/a      n/a –     —

TIMELINE
  Nov 4   Reserved by mitre
  Nov 4   Published (CNA: mitre)
  Oct 14  ENRICHED — CVE-2018-18928. Received CVSS 9.8 and CPE data from NVD.

CWE-190 · CNA: mitre · CVSS v3.0 · 4 references · NVD status: Modified

Description

International Components for Unicode (ICU) for C/C++ 63.1 has an integer overflow in number::impl::DecimalQuantity::toScientificString() in i18n/number_decimalquantity.cpp.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
November 4, 2018	Reserved	Reserved by mitre
November 4, 2018	Published	Published (CNA: mitre)
October 14, 2026	ENRICHED	ENRICHED — CVE-2018-18928. Received CVSS 9.8 and CPE data from NVD.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
n/a	n/a	—	n/a	—

Weaknesses

CWE-190

References (4)

https://bugs.chromium.org/p/chromium/issues/detail?id=900059 [Third Party Advisory]
https://cert-portal.siemens.com/productcert/html/ssa-398330.html
https://github.com/unicode-org/icu/commit/53d8c8f3d181d87a6aa925b449b51c4a2c922a51 [Patch, Vendor Advisory]
https://unicode-org.atlassian.net/browse/ICU-20246 [Vendor Advisory]

Authoritative record: CVE-2018-18928 at cve.org

Weaknesses: CWE-190

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2018-18928 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.